CGN is an absolute cesspit of conspiracy thinking, and wackjob views of pretty much everything.
I poked into the OIC ban sub-forum, and regret wasting my time there.
There are users there convinced the government is sending in plants to ask questions about the buy-back, to encourage others to participate. Ignoring the reality that it's likely just people not terminally online who found the forum in a Google search, and have genuine questions.
If you ever want arguments in support of banning all firearms ownership in Canada, just spend a day on CGN...